How to Measure Your Bed for Perfect Fitting Sheets
Simple steps to ensure your custom MildMate bedding fits perfectly every time Getting the right measurements is essential for custom bedding that fits perfectly. Follow our simple guide to measure your bed correctly.
What You’ll Need

Measuring tape (fabric measuring tape preferred)

Paper and pen to note measurements

Helper (optional but recommended for larger beds)
Step-by-Step Measurement Guide

Measure Mattress Width
Measure the width of your mattress from side to side at the widest point
Tips:
- Ensure measuring tape is straight
- Measure at multiple points if mattress shape is irregular
- For family co-sleeping arrangements, measure the entire combined surface


Measure Mattress Length
Measure the length of your mattress from head to foot at the longest point
Tips:
- Keep measuring tape straight and taut
- For connected mattresses, measure the entire length


Measure Mattress Height
Measure the height (thickness) of your mattress from top to bottom
Tips:
- Include any mattress toppers in your measurement
- For pillow-top mattresses, compress slightly to get accurate measurement


Measure Bed Base (Optional)
If ordering a bed skirt or valance, measure from the top of your box spring to the floor
Tips:
- Account for any gap between mattress and box spring

Special Considerations
Custom Arrangements
For custom family sleeping arrangements with multiple mattresses:
- Measure each mattress individually
- Measure the combined dimensions
- Note any height differences between mattresses
Bed Bridges
When using bed bridges to connect mattresses:
- Include the width of bed bridges in your measurements
- Note any gaps that need to be accommodated
Cribs and Children’s Beds
For measuring cribs and children’s beds:
- Standard crib sizes vs. custom needs
- Safety considerations for fitted sheets
Ready to Order Your Custom Bedding?
Use your measurements to order perfectly fitting custom bedding from MildMate. We guarantee a perfect fit for any mattress shape.
MildMate guarantees a perfect fit for all custom bedding orders based on your measurements.
For custom shapes like boat mattresses, RV beds, or irregular designs, we need more detailed measurements to ensure a perfect fit. Follow our specialized guide to measure your unique mattress shape.
MildMate specializes in creating custom bedding for any mattress shape, including trapezoidal, curved, cut-corner, and other non-standard designs.

What You’ll Need for Special Shape Measurements

Measuring tape (fabric measuring tape preferred)

Large paper or template material (for tracing shapes)

Straight edge or ruler

Camera or smartphone for taking photos

Helper (strongly recommended)
Special Shape Measurement Methods
Grid Measurement Method
This method is ideal for trapezoidal or irregularly shaped mattresses like those found in boats or RVs.
Steps:
- Measure the total length and width at the longest/widest points
- Divide the mattress into equal sections (5-6 horizontal lines)
- Measure the width at each horizontal line
- Note all measurements with their positions
- Measure the height (thickness) of the mattress

Perimeter Measurement Method
This method works well for mattresses with straight edges at different angles.
Steps:
- Measure each straight edge of the mattress
- For curved edges, measure at multiple points or use a flexible curve ruler
- Note the angle between edges if not 90 degrees
- Create a diagram with all measurements labeled
- Measure the height (thickness) of the mattress

Template Method (Most Accurate)
For the most accurate results, especially with complex shapes, creating a template is recommended.
Steps:
- Place large paper beneath or on top of the mattress
- Trace the exact outline of the mattress
- Measure and note key dimensions on the template
- Take photos of the template with measurements visible
- Roll up template for shipping or take clear photos from directly above
- Measure the height (thickness) of the mattress

Special Considerations for Boat/RV Mattresses
Cutouts and Notches
For mattresses with cutouts or notches:
- Measure the position of each cutout from the nearest edges
- Measure the dimensions of the cutout itself
- Note if corners are square or rounded
Curved Corners
For mattresses with curved corners:
- Measure the radius of the curve if possible
- Or measure the distance from where the curve begins to the corner point
- Take photos from directly above to show the curve shape
Installation Access
Consider access limitations:
- Measure doorways and hatches the bedding must pass through
- Note any obstructions that might affect installation
- Consider if the mattress needs to be flexible for installation
Ready to Order Your Custom Bedding?
Use your measurements to order perfectly fitting custom bedding from MildMate. We guarantee a perfect fit for any mattress shape.
MildMate guarantees a perfect fit for all custom bedding orders based on your measurements.